A. On April 15, 200, the Defendant published a basic plan for non-commercial activities (BTO, Butil-Tr-O rate, transfer ownership to the Government or local government, grant the private project operator the right to manage and operate the instant project for a certain period for 10 years) based on Article 10 of the former Public-Private Partnerships Act (amended by Act No. 7386, Jan. 27, 2005; hereinafter “Private Investment Act”). The Plaintiff, who was selected as the project operator of the instant case, entered into the concession agreement with the Defendant on May 28, 200 for the purpose of reducing the period of use of the instant project from 200, to 30,000,000 won for 20,000 won and 20,000,000 won and 20,000,000 won and 20,000,000 won and 3,00,000,000).